Im not sure but i think its 4ft
hope this helps
Answer:
Explanation:
The problem is based on vibration in string .For it the formula is as follows :
n = k √T , n is frequency of fundamental tone , k is constant for a string of given length and T is tension in the string .
In the first case weight of sphere is equal to tension .
weight = volume of sphere x density of copper x g
= v x 8960 x g
Putting the values
300 = k √ (v x 8960 x g)
300 = k √ 87808v
When the sphere is half submerged
tension is equal to apparent weight of sphere in water
= v x 8960 x g - .5 v x 1000 x 9.8 , v is volume
= 82908v
for second case
n = k √ 82908v
dividing the two equations
n / 300 =
= .9716
n = 291.5 Hz .
Answer:
The average distance is 999.936 light years.
Solution:
As per the question:
Ours is the Milky Way Galaxy with the diameter:
D = 1,00,000 ly
Radius, R =
Now,
A =
The area to each civilization, A' is:
A' =
The radius of each area of civilization, r:
Thus the average separation distance between civilizations is given as:
2r =
Answer:
0.91 J
Explanation:
Kinetic energy is given by:
where
m is the mass
v is the speed
For the lemming in this problem, when it jumps from the cliff, we have
m = 0.0780 kg
v = 4.84 m/s
Substituting into the equation,